# Bentley iTwin Systems

Bentley's iTwin Platform integrated with EC3 allows you to take Quantity Takeoff reports created using the iTwin Reporting Platform and export them to EC3 for convenient Life Cycle Analysis for both infrastructure projects and buildings. The iTwin Platform enables aggregation of engineering data created by various design tools. A summary of the design data is exported through this integration, allowing you to gain insights into the environmental impacts of your infrastructure projects.

### Starting in iTwin

In iTwin Experience users can view and analyse design elements, define properties and aggregate design elements into groups.

<figure><img src="/files/GiGg3eO3mHPp0kFY7iCD" alt=""><figcaption></figcaption></figure>

Grouped elements with information on material type and quantities can be exported to EC3 to perform carbon accounting.

<figure><img src="/files/Vn9nV4dlZhASvFejXxeR" alt=""><figcaption></figcaption></figure>

User is directed to EC3 tool in a separate window.

<figure><img src="/files/aRzh1nvhcnnEyCG6E8il" alt="User is directed to EC3 tool in a separate window."><figcaption></figcaption></figure>

### Refining material information in EC3

In the EC3 tool, emission factors are automatically assigned based on the assigned material type. Users can either rely on the predefined data or adjust the emission factors according to their needs.

<figure><img src="/files/HQOP2HF88LCQ0BS3oC08" alt=""><figcaption></figcaption></figure>

EC3 offers an extensive global material library that allows users to select the appropriate emission factor from its EPD database.

<figure><img src="/files/FoV7TZtx8IqY9ugb3xSN" alt=""><figcaption></figcaption></figure>

EC3 also provides various charts for analyzing the project's carbon footprint. For example, you can visualize contributions by materials and systems using the EC3 Sankey diagram.

<figure><img src="/files/m3cRElyv6LKvWtkFcKrm" alt="EC3 also provides various charts for analyzing the project&#x27;s carbon footprint. For example, you can visualize contributions by materials and systems using the EC3 Sankey diagram."><figcaption></figcaption></figure>

### Carbon analysis in iTwin

Prepared carbon data can be pulled back to iTwin Experience to visualize the carbon within the design using heatmaps.

<figure><img src="/files/zIHe55JGVmKFJ3rYA6vk" alt=""><figcaption></figcaption></figure>

Carbon heatmap is created based on the original element groups.&#x20;

<figure><img src="/files/GvBMhh4id1EFGuevpWPA" alt=""><figcaption></figcaption></figure>

User can turn off groups and analyse only selected elements.

<figure><img src="/files/buDOV1BDc25jfoZxCDmU" alt=""><figcaption></figcaption></figure>

Carbon data can be viewed also as a pie chart.

<figure><img src="/files/j51hwRWL8Vn0j0WE8C35" alt=""><figcaption></figcaption></figure>

Pie charts allow users to see details in the groups.

<figure><img src="/files/FezxXoXWVnqC3d7ZbUfu" alt=""><figcaption></figcaption></figure>

### Additional information

More details about Carbon Analysis can be found at [Carbon Analysis Software | Bentley Systems](https://www.bentley.com/software/carbon-analysis/).

More information on Bentley iTwin Platform Carbon Calculations APIs can be found at [Overview - Carbon Calculation page on the iTwin Platform.](https://developer.bentley.com/apis/carbon-calculation/overview/)


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.buildingtransparency.org/ec3/integrations/bentley-itwin-systems.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.